Running the Rawhide bits as of 1999/12/12, including, rpm-3.0.4-0.9,
and cpio-2.4.2-13, I get:
c130441-j:rpm!> rpm -Uvh emacs-X11-20.4-5.i386.rpm
emacs-X11
##################################################
unpacking of archive failed: cpio: Bad magic
Segmentation fault
c130441-j:rpm!> rpm -q emacs-X11
emacs-X11-20.4-4
c130441-j:rpm!>
The files seem to have been installed OK, but rpm does not report the
package as having been upgraded.